How many years of comparable data are there for Sri Lanka and Zimbabwe?

49 years are reported by both, from 1974 to 2023.

Where does this data come from?

Statizoid (derived), published as Diphtheria - number of reported cases, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sri Lanka vs Zimbabwe: Diphtheria - number of reported cases, per square kilometre

Sri Lanka

0 units per square kilometre

in 2023

Zimbabwe

0 units per square kilometre

in 2023

Sri Lanka rank

57th

Zimbabwe rank

57th

Diphtheria - number of reported cases, per square kilometre over time

Sri Lanka
Zimbabwe

How they compare

Sri Lanka currently reports 0 units per square kilometre against 0 units per square kilometre in Zimbabwe, a difference of 0 units per square kilometre.

The two have swapped places 9 times across 49 shared years of data; in 1974 it was Sri Lanka ahead.

Sri Lanka ranks 57th and Zimbabwe ranks 57th of 204 countries.

Sri Lanka has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Sri Lanka	Zimbabwe	Difference	Ahead
1970s	0.0028 units per square kilometre	0.0001 units per square kilometre	0.0027 units per square kilometre	Sri Lanka
1980s	0.0002 units per square kilometre	0 units per square kilometre	0.0002 units per square kilometre	Sri Lanka
1990s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Sri Lanka
2000s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Sri Lanka
2010s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	—
2020s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher diphtheria - number of reported cases, per square kilometre, Sri Lanka or Zimbabwe?: Sri Lanka, at 0 units per square kilometre against 0 units per square kilometre in Zimbabwe as of 2023.
What is the difference in diphtheria - number of reported cases, per square kilometre between Sri Lanka and Zimbabwe?: 0 units per square kilometre, with Sri Lanka ahead.
How many years of comparable data are there for Sri Lanka and Zimbabwe?: 49 years are reported by both, from 1974 to 2023.
How do Sri Lanka and Zimbabwe rank globally for diphtheria - number of reported cases, per square kilometre?: Sri Lanka ranks 57th and Zimbabwe ranks 57th of 204 countries.
Where does this data come from?: Statizoid (derived), published as Diphtheria - number of reported cases, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sri Lanka vs Zimbabwe: Diphtheria - number of reported cases, per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 06 September 2026, from https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/sri-lanka/zimbabwe/

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<a href="https://health.statizoid.com/compare/diphtheria-number-of-reported-cases-per-square-kilometre/sri-lanka/zimbabwe/">Sri Lanka vs Zimbabwe: Diphtheria - number of reported cases, per square kilometre</a> — Statizoid

About this data

Indicator: Diphtheria - number of reported cases, per square kilometre
Unit: units per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 205 places, 7,917 data points, 1974–2023
Last refreshed: 31 August 2026

Diphtheria - number of reported cases divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.